Android Who? iPad is Poised to Rule the World

There are two potential paths for Apple Inc.'s tablet business: Call it the Amazing Scenario and the Super-Extra-Amazing-With-Whip Scenario.

In the first, Apple's iPad line continues to earn far more money than rival tablets, and likely remains the top seller in the category. But with increasingly intense competition from low-price devices, the iPad will slowly give up its dominance, eventually slipping to perhaps a quarter or less of the tablet market. This wouldn't be disastrous for Apple. In this scenario, the iPad...